Question

Name the chemical produced in ovary which leads to the formation of pollen tube when a pollen grain falls over or sticks over the stigma of a flower?

Answer 1

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Fertilisation. Only after pollination, when pollen has landed on the stigma of a suitable flower of the same species, can a chain of events happen that ends in the making of seeds. A pollen grain on the stigma grows a tiny tube, all the way down the style to the ovary.

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Answer 2

Answer:

FERTILIZATION

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